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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2405.05250 |
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| _version_ | 1866916239375335424 |
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| author | Bialek, Spencer Bertin, Emmanuel Fabbro, Sébastien Bouy, Hervé Rivet, Jean-Pierre Lai, Olivier Cuillandre, Jean-Charles |
| author_facet | Bialek, Spencer Bertin, Emmanuel Fabbro, Sébastien Bouy, Hervé Rivet, Jean-Pierre Lai, Olivier Cuillandre, Jean-Charles |
| contents | We introduce a novel technique to mitigate the adverse effects of atmospheric turbulence on astronomical imaging. Utilizing a video-to-image neural network trained on simulated data, our method processes a sliding sequence of short-exposure ($\sim$0.2s) stellar field images to reconstruct an image devoid of both turbulence and noise. We demonstrate the method with simulated and observed stellar fields, and show that the brief exposure sequence allows the network to accurately associate speckles to their originating stars and effectively disentangle light from adjacent sources across a range of seeing conditions, all while preserving flux to a lower signal-to-noise ratio than an average stack. This approach results in a marked improvement in angular resolution without compromising the astrometric stability of the final image. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_05250 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | DanceCam: atmospheric turbulence mitigation in wide-field astronomical images with short-exposure video streams Bialek, Spencer Bertin, Emmanuel Fabbro, Sébastien Bouy, Hervé Rivet, Jean-Pierre Lai, Olivier Cuillandre, Jean-Charles Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics We introduce a novel technique to mitigate the adverse effects of atmospheric turbulence on astronomical imaging. Utilizing a video-to-image neural network trained on simulated data, our method processes a sliding sequence of short-exposure ($\sim$0.2s) stellar field images to reconstruct an image devoid of both turbulence and noise. We demonstrate the method with simulated and observed stellar fields, and show that the brief exposure sequence allows the network to accurately associate speckles to their originating stars and effectively disentangle light from adjacent sources across a range of seeing conditions, all while preserving flux to a lower signal-to-noise ratio than an average stack. This approach results in a marked improvement in angular resolution without compromising the astrometric stability of the final image. |
| title | DanceCam: atmospheric turbulence mitigation in wide-field astronomical images with short-exposure video streams |
| topic | Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2405.05250 |